diff --git a/librz/include/rz_util/ht_inc.h b/librz/include/rz_util/ht_inc.h
index 19858a015cb..e5172112c80 100644
--- a/librz/include/rz_util/ht_inc.h
+++ b/librz/include/rz_util/ht_inc.h
@@ -216,6 +216,7 @@ RZ_API HtRetCode Ht_(insert_kv_ex)(RZ_NONNULL HtName_(Ht) *ht, RZ_NONNULL HT_(Kv
 
 RZ_API RZ_OWN HT_(IterMutState) *Ht_(new_iter_mut_state)(RZ_NONNULL HtName_(Ht) *ht);
 RZ_API RZ_OWN HT_(IterState) *Ht_(new_iter_state)(const RZ_NONNULL HtName_(Ht) *ht);
+RZ_API void Ht_(free_iter_mut_state)(RZ_NULLABLE HT_(IterMutState) *state);
 RZ_API void Ht_(free_iter_state)(RZ_NULLABLE HT_(IterState) *state);
 
 RZ_API RZ_BORROW VALUE_TYPE *Ht_(iter_next_mut)(RzIterator *it);
diff --git a/librz/util/ht/ht_inc.c b/librz/util/ht/ht_inc.c
index 9e7b400bf8f..e436287a331 100644
--- a/librz/util/ht/ht_inc.c
+++ b/librz/util/ht/ht_inc.c
@@ -646,17 +646,11 @@ RZ_API RZ_OWN HT_(IterState) *Ht_(new_iter_state)(const RZ_NONNULL HtName_(Ht) *
 	return state;
 }
 
-RZ_API void Ht_(free_iter_mut_state)(HT_(IterMutState) *state) {
-	if (!state) {
-		return;
-	}
+RZ_API void Ht_(free_iter_mut_state)(RZ_NULLABLE HT_(IterMutState) *state) {
 	free(state);
 }
 
 RZ_API void Ht_(free_iter_state)(RZ_NULLABLE HT_(IterState) *state) {
-	if (!state) {
-		return;
-	}
 	free(state);
 }